diff --git a/ChangeLog b/ChangeLog
index 6c171c0774..36d5c3c19b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Oct 12 10:39:08 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* configure.in (RUBY_MINGW32): canonicalize only on mingw.
+
 Mon Oct 11 20:20:23 2010  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* lib/net/http.rb (HTTP.get): specify ASCII-8BIT as the result
diff --git a/configure.in b/configure.in
index 4e9f253847..2e0662a781 100644
--- a/configure.in
+++ b/configure.in
@@ -38,7 +38,7 @@ test "$rb_cv_mingw32" = yes && target_os="mingw32"
 AS_CASE(["$target_os"], [mingw*msvc], [
 target_os="`echo ${target_os} | sed 's/msvc$//'`"
 ])
-AS_CASE(["$target_cpu"], [x86_64], [
+AS_CASE(["$target_cpu-$target_os"], [x86_64-mingw*], [
 # canonicalize as like mswin version.  see win32/setup.mak.
 target_cpu=x64
 target_os="`echo ${target_os} | sed 's/32$/64/'`"
diff --git a/version.h b/version.h
index 257b208f2f..f771b2f04c 100644
--- a/version.h
+++ b/version.h
@@ -1,11 +1,11 @@
 #define RUBY_VERSION "1.9.3"
-#define RUBY_RELEASE_DATE "2010-10-11"
+#define RUBY_RELEASE_DATE "2010-10-12"
 #define RUBY_PATCHLEVEL -1
 #define RUBY_BRANCH_NAME "trunk"
 
 #define RUBY_RELEASE_YEAR 2010
 #define RUBY_RELEASE_MONTH 10
-#define RUBY_RELEASE_DAY 11
+#define RUBY_RELEASE_DAY 12
 
 #include "ruby/version.h"